I just use a 6203. It is a common bearing used in a lot of applications, should be available from any auto parts store. They are commonly used as pilot bearings. The snap rings are hell to get out. I heat them with a torch to kill the spring tension and replace them with ones I get from NAPA that have the holes for the snap ring pliers.
Funny story....my parts washer started making funny noises and I had a project that required it with a hard deadline. I took the pump motor apart, found a 6203 bearing had failed, replaced it with a bearing I pulled out of a used Discovery tensioner pulley (because it was 10 PM and I couldn't get a new one and couldn't wait). That was about 5 years ago and it's still working great.